ZHENGZHOU YINCHENG ABRASIVES CO after more than a year of efforts by absorbing advanced technology from foreign countries, and to hire foreign experts scholars to teach guidance and dispatched officers to crack higher studies, continuous exploration and practice. in November 2005 developed an ZJFH150×150×(5-70) boron carbide armor protection products
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High-purity fused mullite


    High-purity fused mullite is white and gray needle-like crystal, with its excellent thermal shock resistance and wearing resistance; it was successfully applied to low creeping rate silicate bricks in blast furnaces, push plates in the alkali-free glass precipitation Kiln, sagger and other kiln furnitures.
Indicators of physical and chemical properties:

 

Type

Index

 

Guarantee value

Typical value

Chemical composition（%）

AL2O3

70-77

75.30

SiO2

22-29

24.10

Fe2O3

≤0.1

0.05

R2O3

≤0.5

0.17

RO

≤0.3

0.27

Mullite phase 3AL2O3 2SiO2 (%)

≥95

Glass phase (%)

≤5

Linear expansion coefficient (1/°C)

≤-6.0×10-6

Density of volume (g/cm3)

≥3.0

Refractoriness( °C )

≥1840